/*
    Copyright 2009 Spencer B. Koehler, Ph.D.

    This file is part of the Brillig Toolkit.

    The Brillig Toolkit is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    The Brillig Toolkit is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with The Brillig Toolkit.  If not, see <http://www.gnu.org/licenses/>.
*/
package org.brillig.crawl;


import org.brillig.text.DetailedUrl;

/**
 * A site info module that keeps track of missing descriptions.
 * <p>
 * @author Spence Koehler
 */
public class MissingDescriptionModule extends BaseSuccessfulSiteInfoModule {
  
  public MissingDescriptionModule() {
    super();
  }

  protected final void doAdd(CrawledPage crawledPage, int crawlDepth, DetailedUrl dUrl) {
    final String url = dUrl.getNormalizedUrl();

    final String description = crawledPage.getMetaDescription();
    if (description == null || "".equals(description)) {
      super.addString("", url);  // keep track of urls for pages w/out a description
    }
  }
}
